self_ty: Ty<'tcx>)
-> ty::TraitRef<'tcx>
{
+ self.prohibit_type_params(trait_ref.path.segments.split_last().unwrap().1);
+
let trait_def_id = self.trait_def_id(trait_ref);
self.ast_path_to_mono_trait_ref(trait_ref.path.span,
trait_def_id,
debug!("ast_path_to_poly_trait_ref({:?}, def_id={:?})", trait_ref, trait_def_id);
+ self.prohibit_type_params(trait_ref.path.segments.split_last().unwrap().1);
+
let (substs, assoc_bindings) =
self.create_substs_for_ast_trait_ref(trait_ref.path.span,
trait_def_id,
dummy_self,
&mut projection_bounds);
+ for trait_bound in trait_bounds[1..].iter() {
+ // Sanity check for non-principal trait bounds
+ self.instantiate_poly_trait_ref(trait_bound,
+ dummy_self,
+ &mut vec![]);
+ }
+
let (auto_traits, trait_bounds) = split_auto_traits(tcx, &trait_bounds[1..]);
if !trait_bounds.is_empty() {
(&data.lifetimes[..], &data.types[..], data.infer_types, &data.bindings[..])
}
Some(&hir::ParenthesizedParameters(_)) => {
- span_bug!(span, "parenthesized parameters cannot appear in ExprPath");
+ AstConv::prohibit_parenthesized_params(self, &segment.as_ref().unwrap().0);
+ (&[][..], &[][..], true, &[][..])
}
None => (&[][..], &[][..], true, &[][..])
}
--- /dev/null
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(conservative_impl_trait)]
+
+fn main() {
+ { fn f<X: ::std::marker()::Send>() {} }
+ //~^ ERROR parenthesized parameters may only be used with a trait
+
+ { fn f() -> impl ::std::marker()::Send { } }
+ //~^ ERROR parenthesized parameters may only be used with a trait
+}
+
+#[derive(Clone)]
+struct X;
+
+impl ::std::marker()::Copy for X {}
+//~^ ERROR parenthesized parameters may only be used with a trait
let b: ::std::boxed()::Box<_> = Box::new(1);
//~^ ERROR parenthesized parameters may only be used with a trait
+
+ macro_rules! pathexpr {
+ ($p:path) => { $p }
+ }
+
+ let p = pathexpr!(::std::str()::from_utf8)(b"foo").unwrap();
+ //~^ ERROR parenthesized parameters may only be used with a trait
+
+ let p = pathexpr!(::std::str::from_utf8())(b"foo").unwrap();
+ //~^ ERROR parenthesized parameters may only be used with a trait
+
+ let o : Box<::std::marker()::Send> = Box::new(1);
+ //~^ ERROR parenthesized parameters may only be used with a trait
+
+ let o : Box<Send + ::std::marker()::Sync> = Box::new(1);
+ //~^ ERROR parenthesized parameters may only be used with a trait
}
fn foo<X:Default>() {